ATE389974T1 - DIGITIZER ARRANGEMENT - Google Patents

DIGITIZER ARRANGEMENT

Info

Publication number
ATE389974T1
ATE389974T1 AT04808903T AT04808903T ATE389974T1 AT E389974 T1 ATE389974 T1 AT E389974T1 AT 04808903 T AT04808903 T AT 04808903T AT 04808903 T AT04808903 T AT 04808903T AT E389974 T1 ATE389974 T1 AT E389974T1
Authority
AT
Austria
Prior art keywords
matrix
spatial frequency
arrangement
comparing
sensors
Prior art date
Application number
AT04808903T
Other languages
German (de)
Inventor
Jens Fredrik Hjelmstad
Per Atle Valand
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE389974T1 publication Critical patent/ATE389974T1/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/005Damping of vibrations; Means for reducing wind-induced forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/023Monitoring or calibrating
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04Details
    • G01S3/043Receivers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14Systems for determining direction or deviation from predetermined direction
    • G01S3/46Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/48Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009Transmission of position information to remote stations
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/04Position of source determined by a plurality of spaced direction-finders
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/003Transmission of data between radar, sonar or lidar systems and remote stations
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/02Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/28Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288Satellite antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14Reflecting surfaces; Equivalent structures
    • H01Q15/147Reflecting surfaces; Equivalent structures provided with means for controlling or monitoring the shape of the reflecting surface
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/0006Particular feeding systems
    • H01Q21/0037Particular feeding systems linear waveguide fed arrays
    • H01Q21/0043Slotted waveguides
    • H01Q21/005Slotted waveguides arrays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/0087Apparatus or processes specially adapted for manufacturing antenna arrays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/26Circuits for superheterodyne receivers
    • H04B1/28Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/021Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals

Abstract

A method and arrangement for finding the direction to an emitter source by determining the spatial frequency of a signal received from the source in a sensor panel and comparing the spatial frequency with the instantaneous frequency. The panel includes a first matrix of sensors and a second matrix of sensors interleaved with the first matrix. The spatial frequency is determined by comparing the signals received by the first and second sensor matrices.
AT04808903T 2004-05-28 2004-12-30 DIGITIZER ARRANGEMENT ATE389974T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20042234 2004-05-28

Publications (1)

Publication Number Publication Date
ATE389974T1 true ATE389974T1 (en) 2008-04-15

Family

ID=34959732

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04808903T ATE389974T1 (en) 2004-05-28 2004-12-30 DIGITIZER ARRANGEMENT

Country Status (9)

Country Link
US (4) US20080111759A1 (en)
EP (1) EP1749345B1 (en)
JP (1) JP4523643B2 (en)
CN (1) CN1957535A (en)
AT (1) ATE389974T1 (en)
AU (1) AU2004326314B8 (en)
DE (1) DE602004012620T2 (en)
WO (7) WO2005117202A1 (en)
ZA (1) ZA200608087B (en)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006086605A2 (en) * 2005-02-10 2006-08-17 Automotive Systems Laboratory, Inc. Automotive radar system with guard beam
GB2435129B (en) * 2006-02-10 2009-11-11 Thales Holdings Uk Plc Antenna signal processing apparatus
IL179186A0 (en) 2006-11-12 2008-01-20 Elta Systems Ltd Method and system for detecting signal soures in a surveillance space
US7826800B2 (en) 2006-11-27 2010-11-02 Orthosoft Inc. Method and system for determining a time delay between transmission and reception of an RF signal in a noisy RF environment using phase detection
GB0717031D0 (en) 2007-08-31 2007-10-10 Raymarine Uk Ltd Digital radar or sonar apparatus
US7768453B2 (en) * 2008-08-08 2010-08-03 Raytheon Company Dynamically correcting the calibration of a phased array antenna system in real time to compensate for changes of array temperature
FR2936382B1 (en) * 2008-09-19 2011-10-07 Thales Sa DEVICE AND METHOD FOR ENUMERATION OF ELECTROMAGNETIC TRANSMITTERS
KR100988909B1 (en) * 2008-09-23 2010-10-20 한국전자통신연구원 Microstrip patch antenna with high gain and wide band characteristics
US8854212B2 (en) 2009-03-30 2014-10-07 Datalogic Automation, Inc. Radio frequency identification tag identification system
JP4949455B2 (en) * 2009-11-17 2012-06-06 東芝テック株式会社 Periodic structure
US8405550B2 (en) * 2010-07-30 2013-03-26 Raytheon Applied Signal Technology, Inc. Near-vertical direction finding and geolocation system
KR101111668B1 (en) * 2010-08-27 2012-03-13 한국전자통신연구원 Microstrip patch antenna with high gain and wide band characteristics
JP5623226B2 (en) * 2010-09-30 2014-11-12 株式会社トプコン Measuring method and measuring device
JP5623227B2 (en) 2010-09-30 2014-11-12 株式会社トプコン Measuring method and measuring device
RU2447455C1 (en) * 2010-10-20 2012-04-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Военный авиационный инженерный университет" (г.Воронеж) Министерства обороны Российской Федерации Reduction method for side-lobe level of lfm signal
WO2013156065A1 (en) * 2012-04-18 2013-10-24 Telefonaktiebolaget L M Ericsson (Publ) An antenna arrangement for doa estimation
RU2503971C1 (en) * 2012-06-05 2014-01-10 Открытое акционерное общество "Государственный Рязанский приборный завод" Method to suppress side tabs of autocorrelation function of wideband signal
US9030360B2 (en) * 2012-07-26 2015-05-12 Raytheon Company Electromagnetic band gap structure for enhanced scanning performance in phased array apertures
JP6075846B2 (en) * 2012-10-30 2017-02-08 古野電気株式会社 Radar apparatus and speed calculation method
US9755306B1 (en) * 2013-01-07 2017-09-05 Lockheed Martin Corporation Wideband antenna design for wide-scan low-profile phased arrays
CN103116153B (en) * 2013-01-31 2014-11-12 西安电子科技大学 Eight-unit uniform circular array antenna steering vector construction method in case of mast shielding
GB2525661A (en) * 2014-05-01 2015-11-04 Selex Es Ltd Antenna
US10439283B2 (en) * 2014-12-12 2019-10-08 Huawei Technologies Co., Ltd. High coverage antenna array and method using grating lobe layers
US10411505B2 (en) * 2014-12-29 2019-09-10 Ricoh Co., Ltd. Reconfigurable reconstructive antenna array
US10274520B2 (en) 2015-09-30 2019-04-30 Tektronix, Inc. Offset stacked compressor amplifiers in a discrete digitizer system for noise reduction and increased resolution
CA3011576A1 (en) * 2016-01-22 2017-07-27 Mezmeriz Inc. Signal detection apparatus, method, and applications
RU2605691C1 (en) * 2016-03-15 2016-12-27 Федеральное государственное бюджетное учреждение "Центральный научно-исследовательский институт Войск воздушно-космической обороны Минобороны России (ФГБУ "ЦНИИ ВВКО Минобороны России") Method of searching for composite signals radiation sources
US20170307755A1 (en) 2016-04-20 2017-10-26 YoR Labs Method and System for Determining Signal Direction
EP3290942B1 (en) * 2016-08-31 2019-03-13 Rohde & Schwarz GmbH & Co. KG A method and apparatus for detection of a signal
US10288715B2 (en) 2016-09-09 2019-05-14 Raytheon Company Systems and methods for direction finding using augmented spatial sample covariance matrices
US10288716B2 (en) 2016-09-09 2019-05-14 Raytheon Company Systems and methods for direction finding based on minimum distance search to principal components
US10768265B2 (en) 2016-11-09 2020-09-08 Raytheon Company Systems and methods for direction finding using compressive sensing
CN108872927A (en) * 2018-05-09 2018-11-23 中国船舶重工集团公司第七二三研究所 A kind of microwave and millimeter wave broadband sum-difference network and its construction method
KR102577295B1 (en) * 2018-10-23 2023-09-12 삼성전자주식회사 Electronic device including antenna formed by overlapping antenna elements transceiving multiple bands of signal
EP3809526A1 (en) 2019-10-18 2021-04-21 Rohde & Schwarz GmbH & Co. KG Antenna system and antenna controlling method
US11547386B1 (en) 2020-04-02 2023-01-10 yoR Labs, Inc. Method and apparatus for multi-zone, multi-frequency ultrasound image reconstruction with sub-zone blending
US11832991B2 (en) 2020-08-25 2023-12-05 yoR Labs, Inc. Automatic ultrasound feature detection
US11344281B2 (en) 2020-08-25 2022-05-31 yoR Labs, Inc. Ultrasound visual protocols
US11751850B2 (en) 2020-11-19 2023-09-12 yoR Labs, Inc. Ultrasound unified contrast and time gain compensation control
US11704142B2 (en) 2020-11-19 2023-07-18 yoR Labs, Inc. Computer application with built in training capability
CN112986928B (en) * 2021-03-11 2022-06-17 哈尔滨工程大学 Signal sorting multi-source fusion processing method in complex electromagnetic environment
CN114679227B (en) * 2022-03-25 2023-07-14 电子科技大学 Space frequency domain correction method for direction finding error

Family Cites Families (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471855A (en) * 1968-11-25 1969-10-07 Us Air Force System for generating test signals for an array of receiver channels
CA1037306A (en) * 1976-04-30 1978-08-29 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Frequency plane filters for an optical processor for synthetic aperture radar
US4638320A (en) * 1982-11-05 1987-01-20 Hughes Aircraft Company Direction finding interferometer
US4538150A (en) * 1983-01-10 1985-08-27 Westinghouse Electric Corp. Self-calibration of stacked beam radar
JPS6010806A (en) * 1983-06-30 1985-01-21 Natl Space Dev Agency Japan<Nasda> Microstrip array antenna
US4633257A (en) 1983-11-14 1986-12-30 Sanders Associates, Inc. Acquisition system employing circular array
GB2160686B (en) * 1984-06-22 1987-06-10 Stc Plc Identification of ships
IL74887A (en) * 1985-04-14 1989-06-30 Dan Manor Radar warning receiver
US4728958A (en) * 1986-02-25 1988-03-01 Texas Instruments Incorporated Coherent electromagnetic energy emitter locator
US4750002A (en) * 1986-09-12 1988-06-07 Harris Corporation Antenna panel having adjustable supports to improve surface accuracy
US4821044A (en) * 1987-04-14 1989-04-11 Hughes Aircraft Company Waveguide slot array termination and antenna system
US5016018A (en) 1989-03-22 1991-05-14 Hughes Aircraft Company Aperture synthesized radiometer using digital beamforming techniques
JPH02260820A (en) * 1989-03-31 1990-10-23 Nec Home Electron Ltd A/d conversion circuit
US4949089A (en) * 1989-08-24 1990-08-14 General Dynamics Corporation Portable target locator system
US5121413A (en) * 1990-03-05 1992-06-09 Motorola, Inc. Digital pulse processor for determining leading and trailing time-of-arrival
GB2259822B (en) * 1991-07-23 1995-08-30 Terrafix Ltd D F Method
US5339284A (en) 1992-07-17 1994-08-16 Frederick Herold & Associates, Inc. Signal processor for elimination of sidelobe responses and generation of error signals
US5293171A (en) * 1993-04-09 1994-03-08 Cherrette Alan R Phased array antenna for efficient radiation of heat and arbitrarily polarized microwave signal power
FR2706085B1 (en) 1993-06-03 1995-07-07 Alcatel Espace Multilayer radiating structure with variable directivity.
US5834709A (en) 1994-01-26 1998-11-10 Lucent Technologies Inc. Position sensing systems including magnetoresistive elements
US5404144A (en) * 1994-05-04 1995-04-04 The United States Of America As Represented By The Secretary Of The Navy Simultaneous determination of incoming microwave frequency and angle-of-arrival
US5608414A (en) * 1995-06-30 1997-03-04 Martin Marietta Corp. Heat rejecting spacecraft array antenna
GB2303266B (en) * 1995-07-07 2000-01-19 Gec Marconi Avionics Holdings Radar apparatus
US5583505A (en) * 1995-09-11 1996-12-10 Lockheed Martin Corporation Radar pulse detection and classification system
SE504441C2 (en) * 1995-12-19 1997-02-10 Goergen Grundstroem Microstrip antenna
US5920282A (en) * 1996-03-20 1999-07-06 Radian International Llc Digitally-controlled pulse shaper for pulsed radar systems and radar wind profilers
US5666128A (en) * 1996-03-26 1997-09-09 Lockheed Martin Corp. Modular supertile array antenna
SE507796C2 (en) * 1996-11-15 1998-07-13 Ericsson Telefon Ab L M Procedures and systems for data reduction of the arrival times of radar signals.
US6198427B1 (en) * 1998-07-21 2001-03-06 Applied Concepts, Inc. Doppler complex FFT police radar with direction sensing capability
SE514557C2 (en) * 1999-07-09 2001-03-12 Ericsson Telefon Ab L M Device for use in a group antenna for transmitting and receiving at least one frequency in at least two polarizations
US6470192B1 (en) * 1999-08-16 2002-10-22 Telefonaktiebolaget Lm Ericcson (Publ) Method of an apparatus for beam reduction and combining in a radio communications system
CN1196231C (en) * 1999-10-26 2005-04-06 弗拉克托斯股份有限公司 Interlaced multiband antenna arrays
US6333712B1 (en) * 1999-11-04 2001-12-25 The Boeing Company Structural deformation compensation system for large phased-array antennas
IL132803A (en) * 1999-11-08 2005-05-17 Rafael Armament Dev Authority All digital apparatus for bearing measurement of electromagnetic sources
US6255991B1 (en) * 2000-01-19 2001-07-03 Trw Inc. Low cost angle of arrival measurement system
JP2002246910A (en) * 2001-02-20 2002-08-30 Advantest Corp Interleave a/d conversion mode waveform digitizer
US6590150B1 (en) * 2001-05-11 2003-07-08 Karl F. Kiefer Combination photovoltaic cell and RF antenna and method
US20020176522A1 (en) * 2001-05-25 2002-11-28 Koninklijke Phillips Electronics N.V. Quadrature envelope-sampling of intermediate frequency signal in receiver
DE10143561B4 (en) * 2001-09-05 2011-12-15 Eads Deutschland Gmbh Method and system for locating emitters
NL1019022C2 (en) * 2001-09-24 2003-03-25 Thales Nederland Bv Printed antenna powered by a patch.
US7242351B2 (en) * 2003-02-24 2007-07-10 Networkfab Corporation Real-time emitter locating system and method
NO20032897D0 (en) * 2003-06-23 2003-06-23 Ericsson Telefon Ab L M Portable passive sensor
US6914552B1 (en) * 2003-06-25 2005-07-05 The Regents Of The University Of California Magneto-radar detector and method

Also Published As

Publication number Publication date
EP1749345A1 (en) 2007-02-07
EP1749345B1 (en) 2008-03-19
WO2005116682A1 (en) 2005-12-08
JP2008501289A (en) 2008-01-17
DE602004012620D1 (en) 2008-04-30
WO2005117278A1 (en) 2005-12-08
ZA200608087B (en) 2008-03-26
AU2004326314B8 (en) 2009-11-19
US7411537B2 (en) 2008-08-12
US20080111759A1 (en) 2008-05-15
JP4523643B2 (en) 2010-08-11
WO2005117202A1 (en) 2005-12-08
WO2005116681A1 (en) 2005-12-08
US20070241949A1 (en) 2007-10-18
AU2004326314A8 (en) 2008-08-14
WO2005116680A1 (en) 2005-12-08
WO2005117209A1 (en) 2005-12-08
US20070200760A1 (en) 2007-08-30
WO2005116679A1 (en) 2005-12-08
US20070222672A1 (en) 2007-09-27
DE602004012620T2 (en) 2009-04-23
AU2004326314B2 (en) 2009-01-22
AU2004326314A1 (en) 2006-12-14
US7750849B2 (en) 2010-07-06
CN1957535A (en) 2007-05-02

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